Apparantly, rsync and scp boast tab autocompletion !
When you have configured passwordless SSH access (by copying over your public key) and you use these tools, tab autocompletion works as expected.
For example, typing the following on a bash shell:
rsync localfile.txt exampleserver:/examp<TAB>
will automatically autocomplete the foldername.
In the example's case, it becomes:
rsync localfile.txt exampleserver:/examplefolder/
The same goes for scp, like:
scp localfile.txt exampleserver:/examp<TAB>
rsync localfile.txt exampleserver:/examplefolder
rsync and scp are able to do this because the passwordless SSH allows them to see what files can be found on the other server without asking for a password.
On my LAN network, it takes about 1 second to autocomplete, which is perfectly acceptable for me. It certainly beats having to open a seperate SSH session and manually making a lising ;-)